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Dedicated 20a lines, 125 feet distance, which gauge wire to run?

Want to set up 4x dedicated 20-amp lines for my hifi system. The distance from the outlets to the breaker box is about 125 feet. What wires should I use? 10, 8, or 6 gauge? And should they be solid or stranded? If you could be as specific as possible that would be appreciated (brands, links, etc), as I am out of my depth here. The wire will need to run underground for a good portion, and then into craw space, if that makes any difference.
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Showing 4 responses by danmar123

danmar123's avatar
danmar123
474 posts
 
#1 wire is a lil over kill but, go with it. Do you really need a 150 amp panel? Just make sure the buss is Copper! I'm happy to see your going to use VH wire. Looks like your on your way. Keep us in the loop.
danmar123's avatar
danmar123
474 posts
 
Do you have room to put a 60 breaker in your main panel? If so ,run 6 gauge wire to a 60 amp sub panel, then run your receptacles from there.
danmar123's avatar
danmar123
474 posts
 
I don’t think the 4 gauged wire matters, but I suggest VH audio’s 10 gauge Cyro treated wire. Try to look into an audio grade sub panel or something of a Copper buzz bar sub panel.
danmar123's avatar
danmar123
474 posts
 
I just did a search & came up with this; While it’s common to use a 6-gauge wire for 60-amp breakers in practice, it’s best to use a 4-gauge wire if you’re installing a 60-amp subpanel. 60-amp breaker panels controlling several circuits can draw a max of 60 amps before the subpanel breaker trips. I doubt you’ll ever draw 60 amps @ any giving time.
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